Question

The weight of adults in a certain city has a mean of 130 lbs, with standard deviation of
41 lbs. A sample of 25 adults living in one of the kebeles of the city is found to have a
mean weight of 129 lbs. Does this mean the residents of the kebele weigh
significantly less on the basis of the1% level of significance? (Assume normal
population.)
a) State the null and the alternative hypothesis.
b) Based on the information provided would you employ the Z or the t as the
distribution of the test statistic?
c) Give the critical region
d) What is your decision?

Answer 1

solution

Answer 2

i need anser

Answer 3

The weight of adults in a certain city has a mean of 130 lbs, with standard deviation of 41 lbs. A sample of 25 adults living in one of the kebeles of the city is found to have a mean weight of 129 lbs. Does this mean the residents of the kebele weigh significantly less on the basis of the1% level of significance? (Assume normal population.)

Answer 4

Pleace tell the answer for this question..

Answer 5

Cccc

Answer 6

Stati

Answer 7

125

Answer 8

Required answer